Table 4.

Adsorption isotherm parameters for Ni(II) and Cu(II) adsorption onto grafted cellulose with binary monomer mixtures.

Isotherm	Constants	Cell-g-P(AN-co-AA)		Cell-g-P(AN-co-Sty)
		Ni(II)	Cu(II)	Ni(II)	Cu(II)
Langmuir	KL (L/mg)	0.0018	0.0016	0.0017	0.0013
	qm (mg/g)	446.43	384.62	387.59	362.32
	R2	0.9989	0.9997	0.9988	0.9991
	RL	0.7976	0.5142	0.4905	0.5709
Freundlich	KF (L/mg)	11.5659	9.4146	9.7029	6.6039
	n	1.4432	1.5051	1.5058	1.4535
	R2	0.9981	0.9941	0.9962	0.9942